GPU Comparison

A

AMD

RADEON

AMD Radeon 660M

CORE STATE Rembrandt

VRAM System Shared

CLOCK SPEED 1900 MHz

TDP 40 W

BUS WIDTH System Shared

ARCHITECTURE RDNA 2.0

nm

PROCESS 6 nm

LAUNCH DATE 2022

VS

NVIDIA

GEFORCE

GeForce RTX 5090 Mobile

CORE STATE GB203

VRAM 24 GB

CLOCK SPEED 1515 MHz

TDP 95 W

BUS WIDTH 256 bit

ARCHITECTURE Blackwell 2.0

nm

PROCESS 5 nm

LAUNCH DATE 2025

PERFORMANCE BENCHMARKS

geekbench_opencl

12,876

201,834

geekbench_vulkan

14,748

198,405

3dmark_3dmark_steel_nomad_dx12

N/A

5,871

passmark_directx_10

N/A

183

passmark_directx_11

N/A

269

passmark_directx_12

N/A

138

passmark_directx_9

N/A

324

passmark_g2d

N/A

1,057

passmark_g3d

N/A

30,034

passmark_gpu_compute

N/A

13,401

DETAILED SPECIFICATIONS

SPECIFICATION

660M

RTX 5090 Mobile

Core Specs

Shading Units

384

10,496 +2633.3%

Shaders

384

10,496 +2633.3%

TMUs

24

328 +1266.7%

ROPs

16

112 +600.0%

Compute Units

6

—

SM Count

—

82

Clocks

Base Clock

1500 MHz

990 MHz

Boost Clock

1900 MHz

1515 MHz

Memory Clock

System Shared

1750 MHz 28 Gbps effective

Memory

Memory Size

System Shared

24 GB

VRAM (MB)

—

24,576

Memory Type

System Shared

GDDR7

Memory Bus

System Shared

256 bit

Bandwidth

System Dependent

896.0 GB/s

Cache

L1 Cache

128 KB per Array

128 KB (per SM)

L2 Cache

2 MB

64 MB

L0 Cache

32 KB per WGP

—

Performance

Pixel Rate

30.40 GPixel/s

169.7 GPixel/s

Texture Rate

45.60 GTexel/s

496.9 GTexel/s

FP32 (TFLOPS)

1,459.2 GFLOPS

31.80 TFLOPS

FP64 (TFLOPS)

91.20 GFLOPS (1:16)

496.9 GFLOPS (1:64)

FP16 (TFLOPS)

2.918 TFLOPS (2:1)

31.80 TFLOPS (1:1)

AI/RT

RT Cores

6

82 +1266.7%

Tensor Cores

—

328

Power

TDP

40 W

95 W

TDP (W)

40

95 +137.5%

Power Connectors

None

None

Architecture

Architecture

RDNA 2.0

Blackwell 2.0

GPU Name

Rembrandt

GB203

Generation

Navi II IGP (Rembrandt Mobile)

GeForce 50 Mobile

Process Size

6 nm

5 nm

Transistors

13,100 million

45,600 million

Die Size

208 mm²

378 mm²

Foundry

TSMC

TSMC

Density

63.0M / mm²

120.6M / mm²

API Support

DirectX

12 Ultimate (12_2)

12 Ultimate (12_2)

OpenGL

4.6

4.6

Vulkan

1.4

1.4

OpenCL

2.0

3.0

CUDA

—

12.0

Shader Model

6.8

6.8

Physical

Slot Width

IGP

IGP

Outputs

Portable Device Dependent

Portable Device Dependent

Bus Interface

PCIe 4.0 x8

PCIe 5.0 x16

Other

Production

End-of-life

Active

Predecessor

Vega II IGP

GeForce 40 Mobile

Successor

Navi III IGP

—

View Radeon 660M Details View GeForce RTX 5090 Mobile Details